fix: correct variable references in test fixtures and update expected output

Author: andy1li

internal/test_helpers/fixtures/pass_statements

@@ -572,14 +572,14 @@ Debug = true
 [stage-1] [test-4.lox]   print foo;
 [stage-1] [test-4.lox]   print baz;
 [stage-1] [test-4.lox] }
-[stage-1] [test-4.lox] print baz;
+[stage-1] [test-4.lox] print foo;
 [stage-1] [test-4.lox] 
 [stage-1] [test-4] $ ./your_program.sh run test.lox
 [your_program] modified foo
 [your_program] inner baz
 [your_program] modified foo
 [your_program] outer baz
-[your_program] Undefined variable 'baz'.
+[your_program] Undefined variable 'foo'.
 [your_program] [line 17]
 [stage-1] [test-4] ✓ 4 line(s) match on stdout
 [stage-1] [test-4] ✓ Received exit code 70.

test_programs/s10/4.lox

@@ -17,4 +17,4 @@ expected_error_type: runtime
   print <<RANDOM_STRING_1>>;
   print <<RANDOM_STRING_2>>;
 }
-print <<RANDOM_STRING_2>>;
+print <<RANDOM_STRING_1>>;